Third-party modules

Deno’s 3rd-party package registry is:

• deno.land/x

About

Deno can import modules from any location on the web, like GitHub, a personal webserver, or a CDN like pika.dev or jspm.io.

To make it easier to consume third party modules Deno provides some built in tooling like deno info and deno doc. deno.land also provides a web UI for viewing module documentation. It is available at doc.deno.land.

deno.land also provides a simple public hosting service for ES modules that work with Deno. It can be found at deno.land/x. source

From deno.land/x:

What is deno.land/x?

deno.land/x is a hosting service for Deno scripts. It caches releases of open source modules stored on GitHub and serves them at one easy to remember domain.

deno.land/x is a URL rewriting service for Deno scripts.

The basic format of code URLs is https://deno.land/x/MODULE_NAME@BRANCH/SCRIPT.ts.

If you leave out the branch, it will default to the module’s default branch, usually master.

Example page:

• https://deno.land/x/

Web server

Demo of using the deno.land/x/oak/ module.

The Application class wraps the serve() function from the http package.

Middleware is added with the .use() method.

A Hello World server:

• index.ts

    import { Application } from "https://deno.land/x/oak/mod.ts";
  
    const app = new Application();
  
    app.use((ctx) => {
      ctx.response.body = "Hello World!";
    });
  
    await app.listen({ port: 8000 });
  

Run:

$ deno run --allow-net index.ts

View in the browswer:

• http://localhost:8000

Colors

Demo of using the deno.land/x/color module.

• index.ts - using TypeScript

    import clc from 'https://deno.land/x/color/index.ts'
  
    console.log(clc.red.text("I am red"))
  
    console.log(clc.bgYellow.text("I am bgYellow"))
  
    console.log(clc.reset.text("I am reset"))
    console.log(clc.bright.text("I am bright"))
  

• index.js - JavaScript alternative.

    import clc from 'https://deno.land/x/color/index.js'
  
    console.log(clc.red.text("I am red"))
  
    // ...